Whilst good eyepieces make a difference, at this stage of your observing the main thing will to adjust your expectations and observing practices. With Saturn for example you will as Malcolm said, see the Cassini division in good conditions - steady seeing and when the planet is high in the sky. Probably after 2 am at present on a good night. You can only ramp up the magnification on nights when the seeing is excellent.
For deep sky objects, remember to use averted vision as the rod cells necessary for low light viewing are not situated at the fovea, the point on your retina where the image falls when you look directly at something. Most nebulae will look at first like milky smudges. As you keep exploring them you will see more an more detail - dark lanes, patches of brightness, small clusters of stars etc. Keep coming back to objects in different sessions and you will see more. Even better, get a red light headlamp (not too bright) and make notes or sketches and you will see even more as you become systematic and hone your observing skills.
This thread may help you. Patience and understanding night vision are the key.
Hope this helps.